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Testing virtual prototype of a new product in two simulation environments

100%
Łukaszewicz K., Łukaszewicz K.
Management and Production Engineering Review
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2019
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vol. 10
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issue 3
2
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Neutralising and assisting robot SMR-100 Expert – design problematics

99%
Szynkarczyk P.
Bulletin of the Polish Academy of Sciences: Technical Sciences
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2005
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vol. 53
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issue 1
3
Content available remote

Identification of novel putative regulators of the major apoptotic nuclease DNA Fragmentation Factor

99%
Hanus J., Kalinowska-Herok M., Widlak P.
Acta Biochimica Polonica
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2010
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vol. 57
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issue 4
521-527
EN
Yeast two- and three-hybrid systems were used to screen cDNA libraries from HeLa cells and human brain tissue to identify novel protein partners of DNA Fragmentation Factor, the major apoptotic nuclease. The two-hybrid system revealed the DFF45 inhibitory subunit of the nuclease as the only identified partner of the DFF40 catalytic subunit. Similar analysis revealed several protein candidates that potentially interact with the DFF45 subunit: FBXO28, FOSL1, PGK1, PCNT, FHL1 and GFAP. Recombinant GFAP protected DFF45 against cleavage with caspase-3 and prevented activation of the DFF nuclease in vitro. In addition, three-hybrid system results revealed a putative novel protein partner of the DFF40-DFF45 heterodimer. The candidate cDNA contained two open reading frames that mapped to an intron of the GBF1 gene. Products of the candidate cDNA derived from a cell-free transcription/translation system inhibited DNA cleavage by recombinant caspase-activated DFF. This putative partner of DFF may have functional importance in regulating the apoptotic response because its RNAi silencing facilitated cleavage of the DFF45 inhibitor subunit and affected chromatin fragmentation in HeLa cells undergoing apoptosis. This hypothetical protein, named DRIG based on an acronym specifying its genomic location, could be a novel factor involved in regulation of DFF40 apoptotic nuclease.
4
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N-acetyl-beta-glucosaminidase urine activity as a marker of early proximal tubule damage and a predictor of the long-term function of the transplanted kidneys

99%
Kwiatkowska E., Domański L., Bober J., Kłoda K., Safranow K., Szymańska-Pasternak J., Romanowski M., Sulecka A., Pawlik A., Ciechanowski K.
Acta Biochimica Polonica
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2014
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vol. 61
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issue 2
275-280
EN
Introduction: Ischaemia-reperfusion injury (IRI) is a factor leading to the damages of the transplanted kidney, what affects mainly the proximal tubules. Early monitoring of tubule damage can be an efficient tool to predict the allograft dysfunction. Present in proximal tubules, N-acetyl-beta-glucosaminidase (NAG) is a lysosomal enzyme whose excretion rises as a result of IRI or acute rejection. The aim of this study was to monitor the NAG urine activity to evaluate the early proximal tubule damage, and to try to predict the long-term function of the transplanted kidney. Material and methods: The study enrolled 87 Caucasian renal transplant recipients (61.7% males, 38.3% females, mean age 45.56±14.34 years). Urine samples were collected for NAG and creatinine analysis on the 1st day after transplantation, and then in the 3rd and 12th month. Protocol biopsies were performed in the 3rd and 12th month. Results: A significant positive correlation between NAG urine activity in the 3rd month after transplantation and creatinine concentration on the 14th (p=0.004) and 30th day (p=0.05), in the 3rd month (p=0.009) and after the 1st (p=0.005) and 2nd year (p=0.003) was observed. A statistically significantly higher urinary NAG activity in samples collected in the first 3 days and in the 3rd month after transplantation among patients with DGF (p=0.006 and p=0.03 respectively) was found. There was a significant positive correlation between NAG urine activity in the 3rd month and the grade of tubular atrophy in specimens collected in the 3rd (p=0.03) and 12th (p=0.04) month. Conclusions: Monitoring of NAG urine activity is useful in the evaluation of early proximal tubule damage and predicting the long-term function of the transplanted kidneys.
5
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Building information modeling BIM – level of digital construction

86%
Glema A., Glema A.
Archives of Civil Engineering
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2017
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issue 3
6
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High mobility group proteins stimulate DNA cleavage by apoptotic endonuclease DFF40/CAD due to HMG-box interactions with DNA

85%
Kalinowska-Herok M., Widłak P.
Acta Biochimica Polonica
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2008
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vol. 55
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issue 1
21-26
EN
The DFF40/CAD endonuclease is primarily responsible for internucleosomal DNA cleavage during the terminal stages of apoptosis. It has been previously demonstrated that the major HMG-box-containing chromatin proteins HMGB1 and HMGB2 stimulate naked DNA cleavage by DFF40/CAD. Here we investigate the mechanism of this stimulation and show that HMGB1 neither binds to DFF40/CAD nor enhances its ability for stable binding to DNA. Comparison of the stimulatory activities of different truncated forms of HMGB1 protein indicates that a structural array of two HMG-boxes is required for such stimulation. HMG-boxes are known to confer specific local distortions of DNA structure upon binding. Interestingly, the presence of DNA strand cross-links formed by cisplatin or transplatin, which may somehow mimic distortions induced by HMG-boxes, also affects DNA cleavage by the nuclease. The data presented suggest that changes induced in DNA conformation upon HMG-box binding makes the substrate more accessible to cleavage by DFF40/CAD nuclease and thus may contribute to preferential linker DNA cleavage during apoptosis.
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